src/code/kalter/longflight/space/Planet.java

   1 package code.kalter.longflight.space;
   2
   3 import code.kalter.longflight.Loader;
   4 import code.kalter.longflight.LongFlight;
   5 import java.io.IOException;
   6 import java.util.Random;
   7 import javax.microedition.lcdui.Graphics;
   8 import javax.microedition.lcdui.Image;
   9
  10 /**
  11  * Генерация случайных планет
  12  *
  13  * @author KalterFive
  14  */
  15 class Planet {
  16
  17     private final int screenW;
  18     private final int screenH;
  19     private final int COUNT = 5;
  20
  21     private final Random random;
  22     private final Image[] planetGraphics; // все планеты
  23     //=======================
  24     private long lastTime; // для засекания времени
  25     private long delay;    // задержка для генерации планеты
  26     //=======================
  27     private int positionX;
  28     private int positionY;
  29     private int index;
  30
  31     public Planet(int screenW, int screenH) throws IOException {
  32         this.screenW = screenW;
  33         this.screenH = screenH;
  34         random = new Random();
  35         positionX = random.nextInt(screenW - 60);
  36         positionY = -100;
  37         index = random.nextInt(COUNT);
  38         planetGraphics = new Image[COUNT];
  39         Loader iml = Loader.getInstance();
  40         for (int i = 0; i < COUNT; i++) {
  41             planetGraphics[i] = iml.getImage("/gfx/space/planet/" + i + ".png");
  42         }
  43         delay = random.nextInt(25000) + 10000;
  44         lastTime = System.currentTimeMillis();
  45     }
  46
  47     public void paint(Graphics graph) {
  48         long delta = System.currentTimeMillis() - lastTime;
  49         if (delta < delay) {
  50             return;
  51         }
  52         graph.drawImage(planetGraphics[index], positionX, positionY, 0);
  53     }
  54
  55     public void upd() {
  56         long delta = System.currentTimeMillis() - lastTime;
  57         if (delta < delay) {
  58             return;
  59         }
  60         if (positionY++ > screenH) {
  61             newPlanet();
  62         }
  63     }
  64
  65     private void newPlanet() {
  66         for (int i = index; i == index; index = random.nextInt(COUNT));
  67         delay = random.nextInt(25000) + 10000;
  68         lastTime = System.currentTimeMillis();
  69         positionX = random.nextInt(screenW - 60);
  70         positionY = -planetGraphics[index].getHeight();
  71     }
  72 }